Plane geometry, with problems and applications
A 1910 American high-school textbook on plane geometry by H. E. Slaught and N. J. Lennes, published by Allyn and Bacon in Boston for classroom use. Line diagrams show lettered constructions, inscribed circles in gothic arches, and black-and-white tile and pavement patterns built from octagons, squares, and interlocking arcs, usable as geometric ornament or repeat motifs.
